The Golden ratio is the length to width of rectangles that are most pleasing to the eye. The number which is about 1.61803, is the numeric value is called "phi", named for the Greek sculptor Phidias. The Parthenon is a perfect rectangle in size. The number of spirals on the head of Sunflowers are also said to exhibit the Golden mean/ratio.

2.9299372 is a President's Day reference because it is the average of e and pi just as the American President's Day is always observed on the 3rd Monday of February (between George Washington and Abraham Lincoln's birthdays). (For non-US residents, those were the 1st and 16th Presidents of the USA.)

Site of the Battle of 4.108 is not a reference to anything I think it is another map joke.

You do see often on TV and in the media that "It has been 7 years..." or "In the last 7 years..." etc.

8 is not the largest even prime. 2 is. I'm sure this is like the 0.99... entry above, Randall is trying to start internet battles over the subject. Here are all the prime numbers on the chart above: 2, 3, 5, 7

The last entry seems to be a reference to Discrete Math, which rarely deals with numbers higher than 9. Randall again is trying to incite a internet flame war with Mathematicians who study other forms of math.

Discussion

It goes up (literally above 0). A number line can be extended to a complex plane with sqrt(-1) as the unit of measurement in the vertical direction. Or at least, that's where it actually goes. I don't know where Randall would put it. 75.69.96.225 01:04, 5 March 2013 (UTC)

Yes, that's exactly where it is (up to switching clockwise for counterclockwise). There is nothing strange about providing a location for imaginary or complex numbers, the location described is logical, and the adjective 'imaginary' is an artifact of nomenclature and nothing more.173.48.140.216 20:40, 30 March 2013 (UTC)

In fact, complex numbers are nearly more real than real ones! Complex analysis really opened my eyes to how much "stepping out" can help in solving problems. The complex notion of analyticity yields fruit in real analysis. Extensions to hypercomplex numbers are weirder, however. --Quicksilver (talk) 20:27, 17 August 2013 (UTC)

Analyticity must be an imaginary word, and therefore would be found one unit directly above any dictionary. 50.203.89.169 14:19, 9 October 2013 (UTC)

Oh my god, I can't believe how hard I laughed at that. Would an imaginary friend actually be above you then? I'm going to use that sometime. 108.162.219.61 21:25, 24 April 2014 (UTC)

"I'm sorry, you have reached an imaginary number. Please rotate the phone by 90 degrees and try again."141.101.98.250 17:01, 21 October 2017 (UTC)

It appears that Wikipedia had noticed the implications of the title text here. The message now says that it might never be complete, but can be expanded with reliably sourced articles. I'm not 100% sure it's due to Randall's involvement, but I like to think so. --141.101.104.17 22:01, 9 December 2014 (UTC)